JP3373657B2 - Photo film transport equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with perforations provided in advance at a predetermined interval and for a predetermined number of image frames so that the relative positions of the perforations and the photographed frames are constant. The present invention relates to a photographic film transporting device for sequentially feeding the image frames so that the image frames are sequentially positioned at a predetermined position when the photographic film photographed is transported.

[0002]

2. Description of the Related Art Conventionally, the problems to be solved by the invention
A 135 size negative film or the like is provided with perforations (rectangular holes) at a predetermined pitch in advance.
Is this perforation is fitted with a sprocket or the like when it is loaded in the camera, or applying a driving force to the negative film, is associated with the contact child or the like provided on the camera side, the negative film is conveyed correctly It has a role of detecting whether or not. In the transportation by the camera, the initial position, that is, the initially loaded position is various, so that the relative position between the perforation position and the image frame position to be photographed is indefinite.

When the photographic film thus photographed is printed by a printing apparatus, it is necessary to position each image frame at the printing position.

However, there is no mark (index) for specifying this image frame. Therefore, the edge of the image frame is detected by the density difference between the image frame and the base portion, and the image is positioned at the printing position based on the detection result. Such as
I had to do complicated control.

Incidentally, in recent years, it has been proposed to magnetically record information on a negative film, and in such a negative film, a predetermined number of perforations are provided at a predetermined interval in advance for one image frame. And as a result of this,
Images are taken so that the relative positions of the perforations and the image frames are constant.

In view of the above facts, it is an object of the present invention to provide a photographic film transporting device which can easily search the image frame position and can transport the image frame while surely positioning it at a predetermined position.

[0007]

According to a first aspect of the present invention, a perforation is provided in advance at a predetermined interval and a predetermined number of one image frame, and each of the perforation and the shooting frame is provided. A photographic film transporting device for feeding the photographic film frame by frame so that the image frame is positioned at a predetermined position when the photographic film photographed so that the relative position becomes constant is transported. Conveyance means for conveying along, a density detection sensor for detecting the density of the photographic film, a perforation detection sensor for detecting the perforation, and the perforation detection sensor based on the relationship between the relative position of the perforation and the image frame. Image frame position for recognizing the image frame position from the detected perforation position And recognition means, the image frame position
How much the image frames recognized by the recognition means should be recorded
Whether there is an image frame in the table
Image frame discriminating means for discriminating based on the detected density
Then, it is determined that there is an image frame by the image frame determination means,
When the perforation corresponding to this image frame is detected, the position of the image frame is recognized by the image frame position recognizing means, and the control means controls the conveying means to convey and position the image frame to a predetermined position. is doing.

According to a second aspect of the present invention, the image frame position recognizing means is based on the perforation located at the rearmost portion in the photographic film transporting direction among the perforations provided in a predetermined number for one image frame. The feature is that the position of the image frame is recognized.

[0009]

According to the first aspect of the invention, the photographic film is photographed so that the relative position between the perforation position and the image frame is constant. Therefore, the position of the image frame can be recognized by detecting the perforation.

Therefore, when positioning each image frame at a predetermined position, for example, in the case of a printing apparatus, when positioning the image frame at the printing position,
First, while conveying the photographic film by the conveying means,
The density detection sensor detects the density of the photographic film, and from the detection result, the image frame discrimination means detects the image frame position recognition means.
At the position where the image frame recognized by should be recorded ,
It is determined whether or not an image frame actually exists. That is, the image frame may be omitted due to the idling with the camera or the like.

When the image frame discriminating means discriminates that there is an image frame, the perforation corresponding to this image frame is detected by the perforation detection sensor, and the image frame position recognizing means recognizes the position of the image frame. It controls and positions the image frame at a predetermined position.

Since the image frame is positioned at a predetermined position based on the perforation, complicated control, for example, discrimination and calculation such as detection of the image frame edge is unnecessary,
Positioning control can be easily performed. Further, since it is checked whether or not there are image frames, instead of simply advancing the frames by a fixed amount, it is possible to eliminate wasteful transportation and stoppage and improve work efficiency.

According to the second aspect of the present invention, at the time of recognizing the image frame position based on the perforation, by applying the perforation located at the rearmost portion in the carrying direction, the image frame position is conveyed from the recognition to the predetermined position. The distance can be the shortest. The shorter the transport distance is, the more the accuracy is improved, and the image frame can be reliably positioned at a predetermined position.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 2 shows a camera 10 and a photo printing apparatus 12 according to this embodiment. The camera 10 is equipped with a cartridge 16 on one side of which the negative film 14 is wound around a spool 16A and accommodated therein. Camera 1
At 0, a drive reel 22 driven by a motor 20 connected to the control unit 18 is provided. The negative film 14 is frame-fed by locking the leading end of the negative film 14 to the drive reel 22.

As shown in FIG. 1, the negative film 14
Is provided with two perforations 24A and 24B for each image frame 14A. The perforations 24A, 24B is adapted to pre-drilled and is applied to, for example for the positioning when loading the camera 10. Therefore, the position of the image frame 14A is determined by the perforations 24A and 24B.
Will be positioned by each image frame 14A
And two corresponding perforations 24A, 2
The relative position to 4B always matches. Also, two perforations 24A, 24B is that located in the negative film across the transport direction of the corresponding image frame 14A.

As shown in FIG. 2, two photoelectric sensors 30 are installed on the conveyance path of the negative film 14 of the camera 10. The photoelectric sensor 30 corresponds to the path in which the perforations 24A and 24B are provided, a light projecting portion and a light receiving portion are provided so as to straddle the front and back of the negative film 14, and the light beam from the light projecting portion is emitted. The photoelectric sensor 30 outputs a high level signal to the control unit 18 when received by the light receiving unit.

As shown in FIG. 2, two photoelectric sensors 3 are provided.
The pitch size of 0 is the same as the pitch size of two adjacent perforations 24A and 24B provided on the negative film 14. Here, between the light projecting portion 32 and the light receiving portion 34 passes through the negative film 14, two perforations 24A approaching, when 24B is detected simultaneously, pre-imaging region defined predetermined position It is designed to be positioned at. It should be noted that this photographing area becomes the image frame 14A after photographing and development.

The negative film 14 which has been photographed is rewound into the cartridge 16 again, taken out from the camera 10 and brought into the laboratory through the DPE store. In this lab and developed negative film 1 4, arranged to a predetermined position of the photographic printing apparatus 12.

As shown in FIG. 2, the photographic printing apparatus 12
The negative carrier 54 is disposed on the optical axis of the light source 52 that is irradiated during printing. The negative carrier 54 is provided with a drive roller 58A (see FIG. 3) that is rotated by the drive force of a drive unit 58 connected to the control device 56.
The negative film 14 is conveyed in the direction of arrow A in FIG. Further, the negative carrier 54 is provided with a solenoid 60, and the negative film 14 can be sandwiched and crimped to the mask opening 54A (see FIG. 3) at the printing position by a signal from the control device 56.

C is provided between the light source 52 and the negative carrier 54.
Each MY filter 62 is interposed so that the MY filters are projected and retracted on the optical axis according to the exposure amount of each color.

The light rays that have passed through the negative film 14 are irradiated onto the photographic printing paper 66 through the lens 64, and the image is printed on the photographic printing paper 66. A shutter 68 is interposed between the photographic paper 66 and the lens 64,
A signal from the control device 56 is used to retract from the optical axis during exposure.

On the conveying path of the negative film 14,
On the trajectory of the perforations 24A and 24B,
A photoelectric sensor 72 is provided. Therefore, the perforation 24A or 24B can be detected by the detection signal of the photoelectric sensor 72.

By the way, the negative film 14 of the present embodiment.
Is a perforation 24A, 2 in the camera 10.
Since 4B is used as a reference for transport, positioning, and shooting,
The relative positions of the perforations 24A and 24B and the image frame 14A are always the same. Therefore, the position of the image frame 14A can be recognized by detecting the perforations 24A and 24B.

Further, in the present embodiment, as shown in FIG. 3, a predetermined distance (X mm) upstream from the position of the perforation 24B corresponding to the image frame 14A positioned at the printing position (mask opening 54A). A detection point of the photoelectric sensor 72 is provided.

When the photoelectric sensor 72 detects the perforation 24B, it is stopped at the time when it is conveyed by X mm, and the image frame 14A corresponding to the perforation 24B is positioned at the printing position.

Further, in this embodiment, the photoelectric sensor 72 is used.
Further, a linear CCD sensor 74 is provided on the upstream side (a position corresponding to the image frame 14A located two frames before the printing position). The CCD sensor 74 can detect the density of the negative film 14. The density of the negative film 14 is obviously different between the image printed portion and the base portion.

For example, it can be determined that a portion having a high transmission density is an image area and a portion having a low transmission density is a base portion. In this embodiment, the density can be detected by the CCD sensor 74 two frames before the printing position, and it can be determined whether or not the image frames 14A are continuously provided. That is,
This is because there is a case where the camera 10 skips one frame and shoots one frame at the time of shooting by the camera 10.

The operation of this embodiment will be described below. When shooting is completed, the negative film 14 (cartridge 16) is taken out from the camera 10, and when the DPE store is requested to print, it is transported from the DPE store to the lab. To place. Hereinafter, positioning of each image frame 14A to the printing position and a series of printing processes will be described with reference to the flowchart of FIG.

First, in step 200, the flag F is reset (0), and then in step 202, it is judged whether or not the preparation for conveyance is completed. For example, cartridge 1
6 is loaded, and it is determined whether or not the drawing out of the leading end of the negative film 14 is completed.

In the next step 204, the negative carrier 5
It is determined whether or not another negative film 14 is already present in 4 and if the determination is affirmative, the negative film 14 cannot be conveyed, so the routine proceeds to step 206 and abnormal processing is executed. In the abnormality processing, for example, an alarm is issued, an abnormality is displayed, and the operator is prompted to take out the existing negative film 14.

If a negative determination is made in step 204, the process proceeds to step 208 and the negative film 14 is started to be conveyed. That is, the drive unit 58 is driven under the control of the control device 56, and the negative film 14 is conveyed in the direction of arrow A in FIG. 3 by the rotation of the drive roller 58A.

In the next step 210, the CCD sensor 7
Whether or not the image frame 14A is detected in 4 (image frame 14A
Presence / absence), and in the case of negative determination, step 212
Move to. In step 212, it is determined whether or not a predetermined time has elapsed, and if the determination is negative, the process returns to step 210. Therefore, steps 210 and 212 are repeated until the image frame 14A is detected or a predetermined time has elapsed.

Here, in step 210, the image frame 14A
When it is detected that the presence of the perforation is detected, the process proceeds to step 214, and the perforations 24A and 24B are detected.

The perforation 24A is first detected in step 214. When this is detected, the process proceeds to step 216, and it is determined whether or not the flag F is set (1). Since it is the first time when the perforation 24A is detected, the flag F is detected.
Is a reset state, and a negative determination is made in this step 216, the process proceeds to step 218, the flag F is set, and then the process returns to step 214.

Next, the perforation 2 is detected.
4B, which is detected in step 214, and when the process proceeds to step 216, an affirmative determination is made because the flag F is set this time, and the process proceeds to step 220.

In step 220, the operation is stopped after conveying X mm. As a result, the image frame 14A can be positioned at the printing position (mask opening 54A), and step 222 is performed.
And the following printing process is executed.

When the predetermined image frame 14A reaches the printing position, the solenoid 60 is driven to sandwich and press the negative film 14 at the printing position.

In this state, the shutter 68 is opened and C
By making each of the MY filters 62 appear and disappear on the optical axis according to the exposure amount, the light rays that have passed through the negative film 14 are irradiated onto the photographic paper 66 through the lens 64, and the image is printed on the photographic paper 66.

In the next step 224, the flag F is reset, then in step 226 the conveyance is restarted and the process returns to step 210.

Next, the image frame 14A is displayed even if a predetermined time has elapsed.
Is not detected, that is, steps 210, 2
When the affirmative determination is made in step 212 during the repetition of 12, it is determined that the printing process of the final image frame 14A has been completed, the process proceeds to step 228, and the cartridge 16 is wound. In the present embodiment, the cartridge 16 is loaded as it is, and the baking process is performed without removing the negative film 14 from the cartridge 16. However, when the negative film 14 is removed from the cartridge 16 and the baking process is performed, , And continues the conveyance in the direction of arrow A in FIG.

At the next step 230, it is judged whether or not the rewinding or the passing is completed, and when the affirmative judgment is made, this routine ends.

As described above, since the image frame 14A is positioned at the printing position based on the perforation 24B, complicated control such as detecting the edge of the image frame 14A as in the conventional case is not required and can be easily performed. In addition, positioning control can be performed accurately.

In the present embodiment, the photographic printing device 12 is described as an example of the photographic film transporting device, but it can be applied to other photographic film transporting devices such as a tester.
When the mask opening 54A does not exist as in this embodiment, the photoelectric sensor 72 is set to the image frame 1 as shown in FIG.
It should be close to the positioning position of 4A. Thereby, the transport distance (Xmm) after detecting the perforation 24B can be shortened, and the positioning accuracy can be further improved.

The mounting position of the photoelectric sensor 72 is not limited to the above, and may be one frame or more apart as shown in FIG. 6 as long as it is on the upstream side of the position where the image frame 14A is positioned. Due to device limitations, when the positioning center position and the photoelectric sensor 72 mounting position are separated by one frame or more as shown in FIG. 6, the next perforation 2 is performed before positioning is completed.
4B will be detected. Therefore, the transport distance X
A value (X-D) obtained by subtracting the transport distance Dmm after detection of the next perforation 24B from mm is stored,
At the next positioning, the sheet is conveyed based on the stored value.

[0045]

As described above, the photographic film conveying apparatus according to the present invention has an excellent effect that the image frame position can be easily searched and the image frame can be surely conveyed while being positioned at a predetermined position.

[Brief description of drawings]

FIG. 1 is a plan view of a negative film according to this embodiment.

FIG. 2 is a schematic configuration diagram of a photographic printing apparatus and a camera according to this embodiment.

FIG. 3 is a plan view showing a conveyance state of a negative film on a negative carrier according to this embodiment.

FIG. 4 is a flowchart showing a negative film transport control routine.

FIG. 5 is a plan view showing a modified example of the mounting position of the perforation detection sensor.

FIG. 6 is a plan view showing a modified example of the mounting position of the perforation detection sensor.

[Explanation of symbols]

12 Photo printing equipment 14 Negative film 14A image frame 24A, 24B perforation 54 Negative Carrier 58 Drive 72 Photoelectric sensor 74 CCD sensor

Claims (2)

(57) [Claims] 1. A photographic film which is provided with a predetermined number of perforations for one image frame at predetermined intervals, and which is photographed so that the relative positions of the perforations and the photographed frames are constant. A transporting device for a photographic film that transports the image frame in a predetermined position when transporting the photographic film, the transporting device transporting the photographic film along the longitudinal direction, and the density of the photographic film. A density detection sensor that detects the perforation, a perforation detection sensor that detects the perforation, and the image frame position is recognized from the perforation position detected by the perforation detection sensor based on the relative positional relationship between the perforation and the image frame. image frame position recognition means, the image frame position recognition hand Image frame that has been recognized by the
Check whether there is an image frame at the position to be recorded.
Image that is determined based on the density detected by the density sensor
When the image frame discriminating means and the image frame discriminating means discriminate that there is an image frame and the perforation corresponding to the image frame is detected, the image frame position recognizing means recognizes the position of the image frame and determines the predetermined position. A photographic film transporting device comprising: a control unit that controls the transport unit to transport and position the sheet. 2. The image frame position recognizing means recognizes the image frame position based on the perforation located at the rearmost portion in the photographic film transport direction among the perforations provided in a predetermined number for one image frame. The photographic film transporting device according to claim 1, wherein: